Blumbus Testnet Transaction Hash (Txhash) Details

This is Testnet block explorer of Blumbus Testnet

Transaction Details

Overview State

Transaction Hash: 78D27C9D78FA65413ADF85C054BE35FD4FBFD11761116938B04D6AECA7B79D77

Status:

Success

Block:

5677693 19,575 Blocks Confirmations

Time:

1 days ago (2025-01-14 12:45:16 UTC)

Action:

Value:

0 DYM (0 USD)

You are viewing a Testnet transaction

DYM price:

0 USD / DYM

Gas limit & Usage by Txn:

754,137 | 470,655 (62.41%)

Fee:

0.01508274 DYM (0 USD)

Fee paid by:

0x989721a433ebd4f6e49dc1687a3316f28b6ba053 0x989721a433ebd4f6e49dc1687a3316f28b6ba053

Memo:

rly(v0.3.4-v2.5.2-relayer-canon-7-rc)

Index

Value

Type

0.0

IBC Update Client ibc.core.client.v1.MsgUpdateClient

👉 Explain here

{"@type": "/ibc.core.client.v1.MsgUpdateClient", "signer": "dym1nztjrfpna020deyac9585vck729khgznek4pvc", "client_id": "07-tendermint-102", "client_message": {"@type": "/ibc.lightclients.tendermint.v1.Header", "signed_header": {"commit": {"round": 0, "height": "131134", "block_id": {"hash": "iOoxQNo5CG1H3a0QVUoNvJWShuki2ahp1mNmDQAxZvE=", "part_set_header": {"hash": "iOoxQNo5CG1H3a0QVUoNvJWShuki2ahp1mNmDQAxZvE=", "total": 1}}, "signatures": [{"signature": "1GpEk0umqwH/hMKywI3AVwM+VcRAQjWSP73U61SnhMWGOYl5d+LhOUNwPaW83Y12cRpCg93yk13uldrbnYYUCA==", "timestamp": "2025-01-14T12:45:20.664810504Z", "block_id_flag": "BLOCK_ID_FLAG_COMMIT", "validator_address": "xl/CEWwkhP/r105V8i1sk/9mauQ="}]}, "header": {"time": "2025-01-14T12:45:20.664782993Z", "height": "131134", "version": {"app": "0", "block": "11"}, "app_hash": "WWN6H/XGXLWTH0lRWJcpVa8m3dRu8q40cTBdxNYPmOk=", "chain_id": "odysphere_654689-1", "data_hash": "h39XvRCktWZ+yeDAdfdeOEl1BB4322qDZjzPZib0FuQ=", "evidence_hash": "Tlm/JzcrEwS8CxN9G+nVZq1YsVS2prV3ivf0FLHUuEw=", "last_block_id": {"hash": "yNypu/wwShVtSrMHun3Hw29CI4lUVP4oIIrLMxV20mg=", "part_set_header": {"hash": "yNypu/wwShVtSrMHun3Hw29CI4lUVP4oIIrLMxV20mg=", "total": 1}}, "consensus_hash": "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=", "validators_hash": "T0B3v7NyM4SUK8QZ+H/2sJdgJk4UHXDWlcQ4kNZ43us=", "last_commit_hash": "yP2V7Rpnx11nZHcU2a7mnrCigtRbi7glkBuMtw1+B/M=", "proposer_address": "xl/CEWwkhP/r105V8i1sk/9mauQ=", "last_results_hash": "ILUa/JeaKziRLWAfkZwluF4fvDv6BrHFWhIvZ7cNITI=", "next_validators_hash": "T0B3v7NyM4SUK8QZ+H/2sJdgJk4UHXDWlcQ4kNZ43us="}}, "validator_set": {"proposer": {"address": "xl/CEWwkhP/r105V8i1sk/9mauQ=", "pub_key": {"ed25519": "qUYw6uZ6dnMPunSb/y4/QiiXOtpkEYvBfKtsn7Pv03o="}, "voting_power": "1", "proposer_priority": "0"}, "validators": [{"address": "xl/CEWwkhP/r105V8i1sk/9mauQ=", "pub_key": {"ed25519": "qUYw6uZ6dnMPunSb/y4/QiiXOtpkEYvBfKtsn7Pv03o="}, "voting_power": "1", "proposer_priority": "0"}], "total_voting_power": "0"}, "trusted_height": {"revision_height": "131128", "revision_number": "1"}, "trusted_validators": {"proposer": {"address": "xl/CEWwkhP/r105V8i1sk/9mauQ=", "pub_key": {"ed25519": "qUYw6uZ6dnMPunSb/y4/QiiXOtpkEYvBfKtsn7Pv03o="}, "voting_power": "1", "proposer_priority": "0"}, "validators": [{"address": "xl/CEWwkhP/r105V8i1sk/9mauQ=", "pub_key": {"ed25519": "qUYw6uZ6dnMPunSb/y4/QiiXOtpkEYvBfKtsn7Pv03o="}, "voting_power": "1", "proposer_priority": "0"}], "total_voting_power": "0"}}}

/ibc.core.client.v1.MsgUpdateClient

dym1nztjrfpna020deyac9585vck729khgznek4pvc

07-tendermint-102

07-tendermint

1-131134

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

ibc_client

0.0

IBC Acknowledgement (seq_no 14949) ibc.core.channel.v1.MsgAcknowledgement

👉 Explain here

Transfer	F3DAA6B6E19A99BD0EF17123AA544868876D0D8D3628087369488AC5B8015D2E
to odysphere_654689-1
v
Acknowledgement	78D27C9D78FA65413ADF85C054BE35FD4FBFD11761116938B04D6AECA7B79D77

{"@type": "/ibc.core.channel.v1.MsgAcknowledgement", "packet": {"data": "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", "sequence": "14949", "source_port": "transfer", "source_channel": "channel-54", "timeout_height": {"revision_height": "1", "revision_number": "9999"}, "destination_port": "transfer", "timeout_timestamp": "1736859200000000000", "destination_channel": "channel-0"}, "signer": "dym1nztjrfpna020deyac9585vck729khgznek4pvc", "proof_acked": "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", "proof_height": {"revision_height": "131134", "revision_number": "1"}, "acknowledgement": "eyJyZXN1bHQiOiJBUT09In0="}

{"denom":"adym","amount":"10000000000000000000","sender":"dym16wt45ggm5zcermehrm4teejledtlmwyjaq2345","receiver":"ody16wt45ggm5zcermehrm4teejledtlmwyjv3ekz2","memo":"{\"denom_metadata\":{\"description\":\"Native protocol token of Dymension: DYM (adym)\",\"denom_units\":[{\"denom\":\"adym\"},{\"denom\":\"DYM\",\"exponent\":18}],\"base\":\"adym\",\"display\":\"DYM\",\"name\":\"DYM\",\"symbol\":\"DYM\"}}"}

/ibc.core.channel.v1.MsgAcknowledgement

dym1nztjrfpna020deyac9585vck729khgznek4pvc

9999-1

1736859200000000000

14949

transfer

channel-54

transfer

channel-0

ORDER_UNORDERED

connection-66

ibc_channel

odysphere_654689-1

PENDING

transfer

channel-54

transfer

channel-0

14949

131134

ON_ACK

success

adym

10000000000000000000

dym16wt45ggm5zcermehrm4teejledtlmwyjaq2345

ody16wt45ggm5zcermehrm4teejledtlmwyjv3ekz2

{"denom_metadata":{"description":"Native protocol token of Dymension: DYM (adym)","denom_units":[{"denom":"adym"},{"denom":"DYM","exponent":18}],"base":"adym","display":"DYM","name":"DYM","symbol":"DYM"}}

0.0

IBC Acknowledgement (seq_no 14948) ibc.core.channel.v1.MsgAcknowledgement

👉 Explain here

Transfer	E10E28B53A626957CFB71B770F613A4472A81CA494EEEEA020E5AB1B1E180AB4
to odysphere_654689-1
v
Acknowledgement	78D27C9D78FA65413ADF85C054BE35FD4FBFD11761116938B04D6AECA7B79D77

{"@type": "/ibc.core.channel.v1.MsgAcknowledgement", "packet": {"data": "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", "sequence": "14948", "source_port": "transfer", "source_channel": "channel-54", "timeout_height": {"revision_height": "1", "revision_number": "9999"}, "destination_port": "transfer", "timeout_timestamp": "1736859200000000000", "destination_channel": "channel-0"}, "signer": "dym1nztjrfpna020deyac9585vck729khgznek4pvc", "proof_acked": "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", "proof_height": {"revision_height": "131134", "revision_number": "1"}, "acknowledgement": "eyJyZXN1bHQiOiJBUT09In0="}

{"denom":"adym","amount":"7900000000000000000","sender":"dym1gmjaa7wkvt7fy7pqtdgytgxvvct54xcge783hl","receiver":"ody1gmjaa7wkvt7fy7pqtdgytgxvvct54xcgg05kqp","memo":"{\"denom_metadata\":{\"description\":\"Native protocol token of Dymension: DYM (adym)\",\"denom_units\":[{\"denom\":\"adym\"},{\"denom\":\"DYM\",\"exponent\":18}],\"base\":\"adym\",\"display\":\"DYM\",\"name\":\"DYM\",\"symbol\":\"DYM\"}}"}

/ibc.core.channel.v1.MsgAcknowledgement

dym1nztjrfpna020deyac9585vck729khgznek4pvc

9999-1

1736859200000000000

14948

transfer

channel-54

transfer

channel-0

ORDER_UNORDERED

connection-66

ibc_channel

odysphere_654689-1

PENDING

transfer

channel-54

transfer

channel-0

14948

131134

ON_ACK

success

adym

7900000000000000000

dym1gmjaa7wkvt7fy7pqtdgytgxvvct54xcge783hl

ody1gmjaa7wkvt7fy7pqtdgytgxvvct54xcgg05kqp

Advanced

Summary of state change recorded in the end of block

(therefore may contains addresses other than appeared within this transaction)

Address	Denom	Before	After
0x93354845030274cd4bf1686abd60ab28ec52e1a7 0x93354845030274cd4bf1686abd60ab28ec52e1a7	DYM	79,438,436.418504899932916834	79,438,450.093929387806147151
0x989721a433ebd4f6e49dc1687a3316f28b6ba053 0x989721a433ebd4f6e49dc1687a3316f28b6ba053	DYM	834.77511966	834.76003692
0xdc6f17bbec824fff8f86587966b2047db6ab7367 0xdc6f17bbec824fff8f86587966b2047db6ab7367	DYM	0	0
0xf1829676db577682e944fc3493d451b67ff3e29f 0xf1829676db577682e944fc3493d451b67ff3e29f	DYM	0.01088004	0.01508274

message > action

message > sender

update_client > client_id

update_client > client_type

update_client > consensus_height

update_client > consensus_heights

update_client > header

message > module

message > action

message > sender

acknowledge_packet > packet_timeout_height

acknowledge_packet > packet_timeout_timestamp

acknowledge_packet > packet_sequence

acknowledge_packet > packet_src_port

acknowledge_packet > packet_src_channel

acknowledge_packet > packet_dst_port

acknowledge_packet > packet_dst_channel

acknowledge_packet > packet_channel_ordering

acknowledge_packet > packet_connection

acknowledge_packet > connection_id

message > module

delayedack > rollapp_id

delayedack > status

delayedack > source_port

delayedack > source_channel

delayedack > destination_port

delayedack > destination_channel

delayedack > packet_sequence

delayedack > proof_height

delayedack > type

delayedack > acknowledgement

delayedack > packet_data_denom

delayedack > packet_data_amount

delayedack > packet_data_sender

delayedack > packet_data_receiver

delayedack > packet_data_memo

message > action

message > sender

acknowledge_packet > packet_timeout_height

acknowledge_packet > packet_timeout_timestamp

acknowledge_packet > packet_sequence

acknowledge_packet > packet_src_port

acknowledge_packet > packet_src_channel

acknowledge_packet > packet_dst_port

acknowledge_packet > packet_dst_channel

acknowledge_packet > packet_channel_ordering

acknowledge_packet > packet_connection

acknowledge_packet > connection_id

message > module

delayedack > rollapp_id

delayedack > status

delayedack > source_port

delayedack > source_channel

delayedack > destination_port

delayedack > destination_channel

delayedack > packet_sequence

delayedack > proof_height

delayedack > type

delayedack > acknowledgement

delayedack > packet_data_denom

delayedack > packet_data_amount

delayedack > packet_data_sender

delayedack > packet_data_receiver

delayedack > packet_data_memo